I did some checking on the tube(s) coming from the valve cover after detaching them and noticing they weren’t letting vapor out from the head, they were sucking air in. There are two valves in the top of the valve cover, on either side. They suck air in from the airbox to burn off unburned fuel. So they aren’t the issue. That leaves the vapor box on top of the crankcase, harder to get to so I didn’t try today. Went for a ride on a VMAX instead, Graham
On Tue, Dec 25, 2018 at 12:40 PM Darin Hatton <[email protected]> wrote: > This is the one on my 83 silverwing. Tube going down is drain. Make sure > it isn't full. The other goes to air box as you mentioned. On another note. > If you are having moisture in oil it will turn to condensation, even > residual coolant will. This will collect on a paper air filter and block it > to the point where bike won't run. So, don't know if you are running an oil > soaked or paper filter , but if it's paper be sure to change after you get > the problem resolved, > Regards Darin > > On Tue, Dec 25, 2018, 12:31 PM Darin Hatton <[email protected]> > wrote: > >> The tube you are referring to is indeed there to take blow by from >> crankcase and burn it . Takes it from crankcase to breather. Should be a t >> in it somewhere so the condensed vapor can be collected and drained drain. >> On my bikes this drain tube is close to carb overflow tubes under seat >> close to the ground >> >> On Tue, Dec 25, 2018, 12:00 PM Graham Rogers <[email protected]> >> wrote: >> >>> Now there’s some good thoughts Darin. I’ll check the color of the spark >>> plugs. There’s some whitish smoke when I run it in the garage with doors >>> open but I put that down to condensation, etc. my other bikes do the same >>> in similar circumstances at least initially. I can’t tell if it’s smoking >>> while I am riding it. I can’t find anyone to ride behind me in 38 degree >>> weather. Twice I have added a little barleaks to the radiator hoping it >>> will seal a leak. I think I will also try adding some diesel or cleaner of >>> some sort to the oil and run it, just in case it is dirt holed up in the >>> engine. The water pump I can check, that’s easily accessible. Good >>> thoughts. On this bike there is a cannister of some sort that sits on the >>> crankcase just to the back of the carbs. If that allows fumes or whatever >>> out of the crankcase (there is a tube coming out of it , not sure where it >>> goes), same with breather tube from valve cover to air box. If either of >>> those are blocked it may be a cause. Graham >>> >>> On Tue, Dec 25, 2018 at 11:15 AM Darin Hatton <[email protected]> >>> wrote: >>> >>>> HI graham, merry Christmas. My first thought on your oil >>>> contamination would be head gasket as well, although if you have a breach >>>> between coolant and oil passages on head gasket you probably not losee any >>>> compression, just get coolant in oil since the coolant is under more >>>> pressure. >>>> Since you didn't mention any white smoke or blue smoke while running >>>> bike, both of which indicate a breach into the combustion chamber, I think >>>> the information you get will be related to ring and valve wear. . >>>> Can you pressurize cooling system instead. If your crankcase was >>>> empty, and had a leak between coolant and oil passages you would get >>>> collateral in crankcase. >>>> Possibly water pump seal? >>>> Just my 2 cents. Darin >>>> >>>> On Tue, Dec 25, 2018, 10:54 AM kiwinPA <[email protected]> >>>> wrote: >>>> >>>>> EN500 Update, bike runs excellent but I have another issue. It seems >>>>> moisture is getting in the oil. I have run the bike twice now for 10 miles >>>>> on the road and both times there seems to be a slight amount of h2o in the >>>>> oil. The drained oil looks almost just dirty with traces of a milky >>>>> looking >>>>> mix. I have changed the oil 4 times with the same result. Running the bike >>>>> on the stand, rather than on the road (when it was too cold) did not >>>>> produce the cloudy oil as seen through the sight glass, perhaps because of >>>>> no load or whatever. >>>>> My question is besides a leak from the cooling system, is there any >>>>> other way moisture could be getting into the oil. It’s such a small amount >>>>> and there doesn’t seem to be any drop in the radiator fluid level. I’ll >>>>> next give it a compression test to check for a broken head gasket. I want >>>>> to know however if there is any other way moisture could be getting into >>>>> the engine, people?? Graham >>>> >>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "Nighthawk Motorcycle Lovers!" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/nighthawk_lovers/HcarvYHpY1g/unsubscribe >>>>> . >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> To post to this group, send email to [email protected] >>>>> . >>>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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